Susanti, V. D., Krisdiana, I., Murtafiah, W., Setyansah, R. K., & Masfingatin, T. (2021). YouTube vlog channels in basic mathematics as e-learning during the COVID-19 pandemic. PYTHAGORAS Jurnal Matematika Dan Pendidikan Matematika, 16(1), 114–126. https://doi.org/10.21831/pg.v16i1.40932